Refactor for multiple dbs, firewall, vnet rules

main.tf

@@ -1,13 +1,18 @@
+provider "azurerm" {
+  version = ">=1.40.0"
+}
+
 resource "azurerm_resource_group" "mysql" {
+  count    = var.resource_group_create ? 1 : 0
   name     = var.resource_group_name
   location = var.location
   tags     = var.tags
 }
 
-resource "azurerm_mysql_server" "mysql" {
+resource "azurerm_mysql_server" "server" {
   name                = "${var.name}-mysqlsvr"
   location            = var.location
-  resource_group_name = azurerm_resource_group.mysql.name
+  resource_group_name = var.resource_group_name
 
 	sku_name   = var.sku_name
 
@@ -25,18 +30,40 @@ resource "azurerm_mysql_server" "mysql" {
   tags                         = var.tags
 }
 
-resource "azurerm_mysql_database" "mysql" {
-  name                = local.db_name
-  resource_group_name = azurerm_resource_group.mysql.name
-  server_name         = azurerm_mysql_server.mysql.name
-  charset             = var.charset
-  collation           = var.collation
+resource "azurerm_mysql_database" "database" {
+  for_each            = var.dbs
+
+  name                = each.value.name
+  charset             = lookup(each.value, "charset", var.db_charset)
+  collation           = lookup(each.value, "collation", var.db_collation)
+  resource_group_name = var.resource_group_name
+  server_name         = azurerm_mysql_server.server.name
 }
 
-resource "azurerm_mysql_firewall_rule" "mysql" {
-  name                = "${var.name}-fwrules"
-  resource_group_name = azurerm_resource_group.mysql.name
-  server_name         = azurerm_mysql_server.mysql.name
-  start_ip_address    = var.start_ip_address
-  end_ip_address      = var.end_ip_address
+resource "azurerm_mysql_firewall_rule" "firewall_rule" {
+  for_each            = var.firewall_rules
+
+  name                = each.key
+  start_ip_address    = each.value.start_ip
+  end_ip_address      = each.value.end_ip
+  resource_group_name = var.resource_group_name
+  server_name         = azurerm_mysql_server.server.name
 }
+
+resource "azurerm_mysql_virtual_network_rule" "vnet_rule" {
+  for_each            = var.vnet_rules
+
+  name                = each.key
+  subnet_id           = each.value
+  resource_group_name = var.resource_group_name
+  server_name         = azurerm_mysql_server.server.name
+}
+
+resource "azurerm_mysql_configuration" "config" {
+  for_each            = var.mysql_configurations
+
+  name                = each.key
+  value               = each.value
+  resource_group_name = var.resource_group_name
+  server_name         = azurerm_mysql_server.server.name
+}

outputs.tf

@@ -8,11 +8,6 @@ output "server_name" {
   value       = azurerm_mysql_server.mysql.name
 }
 
-output "database_name" {
-  description = "The database name of MySQL Server."
-  value       = azurerm_mysql_database.mysql.name
-}
-
 output "admin_username" {
   description = "The administrator username of MySQL Server."
   value       = var.admin_username

variables.tf

@@ -4,28 +4,22 @@ variable "resource_group_name" {
   default     = "mysqlResourceGroup"
 }
 
-variable "location" {
-  description = "Specifies the supported Azure location where the resource exists."
-  type        = string
+variable "resource_group_create" {
+  description = "Set to false if the resource group already exists"
+  type        = bool
+  default     = true
 }
 
-variable "auto_grow" {
-  description = "(Optional) Defines whether autogrow is enabled or disabled for the storage. Valid values are Enabled or Disabled."
+variable "location" {
+  description = "Specifies the supported Azure location where the resource exists."
   type        = string
-  default     = "Enabled"
 }
 
 variable "name" {
   description = "The name of the server and resources to be created."
   type        = string
 }
 
-variable "db_name" {
-  description = "The name of the database to be created."
-  type        = string
-  default     = ""
-}
-
 variable "admin_username" {
   description = "The administrator username of MySQL Server."
   type        = string
@@ -36,18 +30,6 @@ variable "password" {
   type        = string
 }
 
-variable "start_ip_address" {
-  description = "Defines the start IP address used in your database firewall rule."
-  type        = string
-  default     = "0.0.0.0"
-}
-
-variable "end_ip_address" {
-  description = "Defines the end IP address used in your database firewall rule."
-  type        = string
-  default     = "255.255.255.255"
-}
-
 variable "db_version" {
   description = "Specifies the version of MySQL to use. Valid values are 5.6 and 5.7."
   type        = string
@@ -66,24 +48,6 @@ variable "sku_name" {
   default     = "B_Gen4_2"
 }
 
-variable "sku_capacity" {
-  description = "The scale up/out capacity, representing server's compute units."
-  type        = number
-  default     = 2
-}
-
-variable "sku_tier" {
-  description = "The tier of the particular SKU. Possible values are Basic, GeneralPurpose, and MemoryOptimized."
-  type        = string
-  default     = "Basic"
-}
-
-variable "sku_family" {
-  description = "The family of hardware Gen4 or Gen5, before selecting your family check the product documentation for availability in your region."
-  type        = string
-  default     = "Gen4"
-}
-
 variable "storage_mb" {
   description = "Max storage allowed for a server. Possible values are between 5120 MB(5GB) and 1048576 MB(1TB) for the Basic SKU and between 5120 MB(5GB) and 4194304 MB(4TB) for General Purpose/Memory Optimized SKUs."
   type        = number
@@ -102,6 +66,13 @@ variable "geo_redundant_backup" {
   default     = "Disabled"
 }
 
+variable "auto_grow" {
+  description = "(Optional) Defines whether autogrow is enabled or disabled for the storage. Valid values are Enabled or Disabled."
+  type        = string
+  default     = "Enabled"
+}
+
+
 variable "charset" {
   description = "Specifies the Charset for the MySQL Database, which needs to be a valid MySQL Charset."
   type        = string
@@ -114,12 +85,26 @@ variable "collation" {
   default     = "utf8_unicode_ci"
 }
 
-variable "tags" {
-  description = "Resource Tags."
+variable "dbs" {
+  description = "Map of databases to create, values supported: name, charset, collation"
   type        = map(string)
   default     = {}
 }
 
-locals {
-  db_name = var.db_name == "" ? var.name : var.db_name
+variable "firewall_rules" {
+  description = "Map of firewall rules to create. Key is rule name, values are start_ip, end_ip"
+  type        = map(string)
+  default     = {}
+}
+
+variable "vnet_rules" {
+  description = "Map of vnet rules to create. Key is name, value is vnet id"
+  type        = string
+  default     = {}
+}
+
+variable "tags" {
+  description = "Resource Tags."
+  type        = map(string)
+  default     = {}
 }